CVE-2026-45252 - Heap overflow in FUSE_LISTXATTR

CVE-2026-45252 - Heap overflow in FUSE_LISTXATTR

https://cvefeed.io/rssfeed/latest.atom / Thu, 05/21/2026 - 14:24
CVE ID :CVE-2026-45252
Published : May 21, 2026, 10:16 a.m. | 42 minutes ago
Description :When a fusefs file system implements extended attributes, the kernel may send a FUSE_LISTXATTR message to the userspace daemon to retrieve the list of extended attributes for a given file. The FUSE protocol requires the daemon to return a packed list of NUL-terminated strings. The fusefs kernel module calls strlen() on this daemon-supplied buffer without first verifying that the entire list is NUL-terminated. If a malicious daemon sends a non-NUL-terminated list, the fusefs kernel module may read beyond the end of one heap-allocated buffer and potentially write beyond the end of a second buffer. A malicious daemon could disclose up to 253 bytes of kernel heap memory, or it could inject up to 250 attacker-controlled bytes into unallocated kernel heap space.
Severity: 0.0 | NA
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